1982901551 has 2 divisors, whose sum is σ = 1982901552. Its totient is φ = 1982901550.

The previous prime is 1982901533. The next prime is 1982901601. The reversal of 1982901551 is 1551092891.

It is a weak prime.

It is an emirp because it is prime and its reverse (1551092891) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1982901551 - 2¹⁰ = 1982900527 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1982901499 and 1982901508.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1982903551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 991450775 + 991450776.

It is an arithmetic number, because the mean of its divisors is an integer number (991450776).

Almost surely, 2^1982901551 is an apocalyptic number.

1982901551 is a deficient number, since it is larger than the sum of its proper divisors (1).

1982901551 is an equidigital number, since it uses as much as digits as its factorization.

1982901551 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32400, while the sum is 41.

The square root of 1982901551 is about 44529.7827414417. The cubic root of 1982901551 is about 1256.3203198643.

The spelling of 1982901551 in words is "one billion, nine hundred eighty-two million, nine hundred one thousand, five hundred fifty-one".